Friction draft-rigging.



J, F. OGONNOR. FBIQTION DRAFT RIGGING. APPLICATION FILED 001215.' 190s.

which one end of t e novel combinations of "of one .ofthe frietioii-'blocks'or shoes.

' dinal section, of afriction UNITED sTATEs :fo-mf irocoNNoR, Aor CHICAGO, ILLINOIS, AssIGNoR 'ro w.

ATENT onirica.

H; MINER COMPANY,

.Specification of Letters Patent. l Application medecines: 1 5', 1908,' seria-iin. 457,808.

To all ltif/om t may, concern:

residing in Qliicago, in the county of Cook and State of Illinois, have ,invented anew and useful I n'iproteine-nt iii Friction Draft-Rigging, of

which the following is aspeciiication.` I

fritiondraft rigging. My invention consists in connection -with the draw' bar, followers land coperating' vspring 'and friction shell andfriction block or shoe cushioning devices wit-hin the friction shell, the friction ing in combination with apreliminary compression spring bearin at oneend at gaiiist said transverse partition of the friction shell, .andra supplemental follower for said preliminary fcompressionspring, and va consaid partition and connecting 'thehlocks or shoes with said land serving also to maintain the .main spring as well as spring under friction devices an'd cause a always 'be' In snug cushioning action,

the parts,l to contact ready for eliicient' The invention further-consists-in the novel construction of parts and devices'and in the parts and devices hereinshown and described'.

In the accompanying drawing forming a part of this specication, Fi gure l isfia side elevation partly in bodying my invention. Fig. 2- I s view partly in horizontal section on line- 3 3 ofFig; 1; Figs. 4 and f5, are detail vertical' sections through the fricrespectively, andfFi In the "drawing, A .represents invention relates to improvements in' shellbeing provided with avtransverse l artitionorljweb 'against springbears, sinne` be one end of lthe spring E2 also abuts.

compression spring'E2 Tear follower D1 preliminary compression follower for holding yall the'parts assembled, in-l cluding the wedge and' antiLfrictionrollers,

the' 4preliii'iinary compressionv an initial' tension or loathandAV thus to automatically take; u wearof the' and Vcentral .vertical 4loiigitiI- draft rigging em.-V ..a plan `section online 2 2 of Fig. 1; ,-Fig. 3 i'sfa' vertical-cross' holdl both, the

tion shell on lines and. ofv '11,1'.

' g. v6 iis a-detail plan viewf C `the side vplates 'or' stop 'castings'.having front, rearjand intermediate stops, C1, C?, Q8, 'Cj4 for'jthe'followersD'D1 to abut against.

E El are the main dra-ft ri l sills or draft meinhers of the. carto which l Be it known that I, J O'HN- F. OCoNNoR, a. .t-itizenof the United States,

ging springs, Fi? the preliminary compression v spring, F

the longitudinally movable friction shell or i case',jhaving an 'internal `friction'face f' and provided with an integraltransverse part1` tion or web flagainst whichy one end of the main springs: E E? ahnt, and against which preliminary compression E11-abutat their other. end against the fric.-

y'tion blocks or'shoes F1, the .springs E Et 'loeiiig thus interposed `loetvifeen the frictionv shoes and friction shell. The preliminary abuts at its rear end against the preliminary compression follower D? which'i'sinterposed between the andthe preliminary eom-v v'pression spring E?.

G isthe wedge and g g the anti-friction *rollers interposed betweerifthe. inclined faces. 9'1ofthe vwedge and the inclined the friction shoesxor blocks'F1 F1. The

wedge G. also has stop shoulders g2 C'Operai.-

ing with similar stop shoulders, f3 ori/the friction shoesto hold the anti-friction rollers 'in place. f The friction "shoes or blocks F1 The-main springsj E1 are provided withshoulders fto engage the 'lugsrv h ofthe connectingdevice or rod H vwhich extends longitudinally through the main springs E E1 a nd throu the tra-ns*- verse partition:webf1 of the frietion'shelli` engages the preliminary compression follower D21 Ito integral stopshoiilder or web connecting' device or rod H will. serve' to lwhich' it is connected by a threaded stem. ,h1 and adjusting nut 71,2.- The connecting device o'r rod His further' provided-with an ha `adapted'to engage the transverse parti tion ff of the friction shell sothat this 'one p relin'iinary compression spring Elan the-main springs' E E1 under an' initial .tension or'v load as 'wellies tolioid l allfthefparts, frct ion shell, frictionfblocksf wedge,.anti-frictjion frollers, main springs,

preliminary compression spring and preliminary compression follower in proper` assembled position and cooperative relation with each other.

in p factice, the main draft rigging so ings E El aie preferably put under an initial compression of about three-eighths of an iii'ch, and the preliminary compression spring underan initial compression of about one eighth of an inch when the several parts are assembled for use. The preliminary coinpression spring E2 is short and adapted to permit @about one half inch preliminary cushion movement of the draw-bar before the friction cushioning devices F F1 are brought into action or forced to frictionally slide in respect to each other.

As in my invention neither the main draft rigging springs E-El nor the preliminary compression spring E2 act or bear directly against the wedge, and as the wedge has anti-friction rollers on both sides of it, it is thus left free to release or retract after each cushioning movement oi' compression of the springs, thus insuring a free, easy and perfect release and completely overcoming any tendency of the friction devices to stick or fail in releasing.

The initial tension or compression under which the connecting` bar or device holds the springs causes the cushioning;` mechanism of the draft rigging to 'remain always of the saine proper standard length, notwithstanding the wear that may take place between the friction elements of the cushioning` mechanism. The initial tension under which the springs are held should be. as before stated, approximately one half inch so as to give the draft rigging provision for taking up a large amount of wear between the friction shoes and friction shell. without af fecting the normal action of the draft rigging. This initial tension under which the acting device holds the springs also keeps all the parts in snug and proper engagement with each other.

claim l. In a friction draft rigging, the coinbination with a draw-bar yolie and followers and front, rea' and intermediate stops for the followers to abiit against, of a longitudinally movable friction shell, friction shoes within the shell, a spring interposed a wedge, anti-friction rollers between thc pression spring, a prelin'iinary compression follower, said friction shell having a transverse partition between and against which said preliminary compression soring and Said main spring abut a connection ci;- teiiding between the friction shoes and preliminary compressi-on follower to hold the Springs under an initial tension or load and all the parts in asseinbleifl position, substantially as specified.

2. ln a friction draft rigging, the combination with a draw-bai' volte i id followers. and front, rear and intcrii'iediate stops for the. followers to abut against. of a longitudinally movable friction shell, friction shoes within the shell, a spring interposed between the friction shell and friction shoes a wedge, a preliminary compression spring, a preliminary compression follower, said friction shell having a transverse partition between and against which said preliminary compression spring and said main spring abut and a connection extending between the friction shoes and preliminary compression follower to hold the springs under an initial tension or load and all the parts in assembled position, said connection having lugs and said friction shoes having shoulders to engage tlie lugs of said connection, substantially as specified.

3. ln a friction draft rigging, the combination with a draw-bar yoke and followers, and front, rear and intermediate stops for the followers to abiit against, of a longitudinally movable friction shell, friction shoes within the shell, a spring interposed between the friction shell and friction shoes, a wedge, a preliminary compression spring, a preliminary compression follower. said friction shell having a transverse l l ition between and against which said preliminary compression spring and said main spring abut,'aiid a connection extending between the friction shoes and preliminary compression follower to hold the springs under an initial tension or load and all the parts in assembled position, said connection having lugs and said friction shoes having shoulders to engage tlie lugs of said connection, and said connection having stop shoulders engaging said transverse partition of the friction shell, substantially as specified.

et. In a friction draft rigging, the combi nation with a friction shell. of friction shoes within the shell, a ,spring between the friction shoes and friction shell, a preliminary compression follower and a preliminary coinpression spring between said follower and the friction shell, and a connection between the friction shoes and preliminary compres x sion follower, substantially as specified. between the friction shell and friction shoes,

Zi. In a friction draft rigging, the combi- ;1 nation with a friction shell. 'of friction shoes friction shoes and wedge, a preliminary coni- 1 conipressioi'i follower and a within the shell. a spring between the friction shoes and friction shell, a pieliniiiiai'y preliminary compression spring between said follower and thc friction shell. and a connection between the friction shoes and preliminary compresion follower. said connection having lugs ei ,Y ging` the friction shoes, substan` gially as specilied.

*tion shoesand friction s` '6. In a f lriction draft rigginthe comliicompression nation with a friction shell, of ction shoes within the shell, a sprin lptween the friccompression' follower -and a preliminary compression spring between sa1d follower I and .the frictionl shell,andda connection betweenfthe' friction, shoes and preliminary preliminary follower, said connection having sto shoulders engaging the friction 10 shell, su stantially as specified. i JOHN -F. OCONNOR.- Witnesses: I 

